WO2020168642A1

WO2020168642A1 - Multi-kilogram-level knotless thread preparation process

Info

Publication number: WO2020168642A1
Application number: PCT/CN2019/087566
Authority: WO
Inventors: 卢崇国; 卢静
Original assignee: 海安县中祥线业有限公司
Priority date: 2019-02-18
Filing date: 2019-05-20
Publication date: 2020-08-27
Also published as: CN109706565A

Abstract

A multi-kilogram-level knotless thread preparation process, comprising the following steps: mixing raw materials, drying, extruding and melting the dried raw materials by a screw extruder, spinning, cooling, oiling, winding and forming. Nylon threads prepared by the multi-kilogram-level knotless thread preparation process have advantages of good toughness and rigidity, simple and continuous process, high production efficiency, and stable product quality.

Description

Multi-kilogram knotless wire preparation process

Technical field

The invention relates to the technical field of fiber processing, in particular to a multi-kilogram-level knotless thread preparation process.

Background technique

The fishing line is the line that hangs on the fishing rod when fishing, similar to the silk spit out by a spider, very thin but very strong. Fishing line is a kind of line commonly used in life. Fishing line is not only used for fishing, but we can also use tied things in our lives.

Nylon thread is also known as traditional thread, four-color thread. The manufacturing process of nylon thread is generally made of resin processing and spinning (traditional thread) and adding other materials such as color (four-color thread) to the finished product. Its characteristic is that it has better ductility and elasticity.

There are two basic specifications of nylon fishing line: one is the specifications set by European and American countries with "pounds", such as a ten-pound line, which can withstand a maximum tensile force of ten pounds; the other is a fishing line made in Japan. They are usually distinguished by "number" and specifications, and there are European ones.

The principle is the same as the concept of the number of pounds. The maximum pulling force of a line of about one kilogram can be used as a standard basis for pulling fish in the water.

The thread based on nylon 6 monofilament is increasingly unable to meet people's comprehensive use in many fields, and there is still much room for improvement in performance.

Summary of the invention

The purpose of the present invention is to provide a multi-kilogram-level knotless thread preparation process, which adopts nylon 6 and nylon 66 materials in a certain ratio and is prepared with superior performance.

In order to achieve the above objective, the present invention provides a multi-kilogram-level knotless preparation process, which includes the following steps:

1. The raw materials are mixed. The raw materials include the following components by mass: 100 parts of nylon 6 chips, 100-150 parts of nylon 66 chips, 2-10 parts of compatibilizer, 20-50 parts of toughening agent, 0.8-1 parts of auxiliary Parts, 0.8-1 part of dispersant, mix the above raw materials;

2. Drying, add the mixed raw materials to the dryer or continuous drying tower for drying, the drying temperature is 110-125℃, the drying time is 3.5-4.5 hours, the drying vacuum degree is -0.07～-0.09MPa, and the moisture content of the slice is 750 -900ppm;

3. The dried raw material is extruded and melted with a screw extruder and then spun, the spinning melt temperature is 180-220°C, and the temperature fluctuation of the spinning melt is controlled at ±2°C. Pressure melting, the temperature in the first zone is 190-200℃, the temperature in the second zone is 188-202℃, the temperature in the third zone is 190-205℃, and the temperature in the fourth zone is 185-199℃;

4. Cooling. After spinning, a side blowing device is installed in the cooling tunnel for cooling. The side blowing speed is 0.5 meters per second, the side blowing temperature is 19-27°C, and the wind humidity is 62-75%;

5. Oiling, spinning cluster oiling, the concentration of the oiling agent is 12.8-14.4%, the oiling rate of the oiling agent: 0.75-0.95%, and the pressure regulating range is 0.32-2.1 kg;

6. Winding forming, upper godet frequency: 61-76HZ, winding speed: 979-995 m/min, lower godet frequency: 61-77HZ, friction roller frequency: 68-74HZ, traverse frequency: 57-66HZ.

The screw extruder includes a frame, an extrusion device is arranged on the frame, and a cooling device is arranged outside the extrusion device. The extrusion device includes a barrel, a screw and an extrusion die, and a feed port is provided on the barrel. The screw is arranged inside the barrel, the cooling device is arranged on the outside of the barrel, and the cooling device is a multi-section spiral cooling water channel wound on the outside of the barrel. The two ends of the cooling water channel are the water inlet and the water outlet respectively.

The outside of the extruder barrel is cooled in sections according to the internal partitions to ensure that the temperature of each partition meets the set requirements. The spiral cooling water pipes provide uniform cooling and good results.

When the screw extruder is extruding and melting, the flange temperature is 200-230°C, the box temperature is 190-205°C, and the metering pump speed is 14-15 revolutions per minute. The extrusion temperature is 210-240°C, the rotation speed is 200-260rpm, the temperature range of each zone of the extrusion process is 200-260°C, the residence time is 1-2 minutes, and the pressure is 12-18Mpa.

The compatibilizer is selected from one or a mixture of ethylene-acrylate-maleic anhydride terpolymer, linear low-density polyethylene grafted maleic anhydride, and ethylene-octene copolymer grafted maleic anhydride.

The processing aids are selected from one or a mixture of low molecular weight esters, metal soaps, stearic acid complex esters, amides and the like.

The dispersant is selected from one or a combination of hydroxypropyl methyl cellulose (HPMC) and polyacrylamide (PAM).

The toughening agent is one or two or three of ethylene-acrylic acid copolymer, ethylene-vinyl acetate copolymer, and high-density ethylene.

In the multi-kilogram knotless thread preparation process of the present invention, the prepared nylon thread has good toughness and rigidity, and has the advantages of simple flow, continuous flow, high production efficiency and stable product quality.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the screw extruder of the present invention;

detailed description

The preferred technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.

The multi-kilogram knotless preparation process of the present invention includes the following steps:

1. Mixing of raw materials, the raw materials include the following components by mass: 100 parts of nylon 6 chips, 120 parts of nylon 66 chips, 5 parts of compatibilizer, 40 parts of toughening agent, 1 part of auxiliary agent, 1 part of dispersant, and The above raw materials are mixed;

2. Drying, add the mixed raw materials to the dryer or continuous drying tower for drying, the drying temperature is 120°C, the drying time is 4 hours, the drying vacuum is -0.08MPa, and the moisture content of the slice is 800ppm;

4. Cooling. After spinning, a side blowing device is installed in the cooling tunnel for cooling. The side blowing speed is 0.5 meters per second, the side blowing temperature is 22°C, and the wind humidity is 70%;

5. Oiling, spinning cluster oiling, the concentration of the oiling agent is 13%, the oiling rate of the oiling agent: 0.85%, and the pressure regulating range is 1 kg;

Nylon 6/66 copolymer chip is an in-situ polymerized modified nylon chip with good mechanical properties, strong abrasion resistance, low melting point and plasticizing properties. It is extremely versatile and can be used to make fishing lines. Fishing line made of nylon 6 monofilament accounts for more than 50% of the total. Nylon 6/66 copolymer chips are ideal spinning raw materials for modern fishing lines.

It is produced by using nylon 6 and nylon 66 materials in a certain ratio by in-situ polymerization technology. The nylon 6 monofilament fishing line spun with it has a thinner diameter, softer, more wear-resistant, and more convenient throwing. , Nodules have better strength, more water resistance, and more suitable for various types of fishing line knots. Compared with fluorocarbon wires and PE wires, they have better ductility, provide better cushioning, and are extremely high The ratio of the nodule tension to the linear tension, the dyeing performance is excellent, and it is easier to dye various colors.

Claims

The multi-kilogram knotless wire preparation process is characterized by including the following steps:

1) Mixing of raw materials, the raw materials include the following parts by mass: 100 parts of nylon 6 chips, 100-150 parts of nylon 66 chips, 2-10 parts of compatibilizer, 20-50 parts of toughening agent, 0.8-1 parts of auxiliary Parts, 0.8-1 part of dispersant, mix the above raw materials;

2) Drying, add the mixed raw materials to the dryer or continuous drying tower for drying, the drying temperature is 110-125℃, the drying time is 3.5-4.5 hours, the drying vacuum is -0.07～-0.09MPa, and the moisture content of the slice is 750 -900ppm;

3) The dried raw material is extruded and melted with a screw extruder and then spun, the spinning melt temperature is 180-220°C, and the spinning melt temperature fluctuation is controlled at ±2°C. The extrusion of the screw extruder Pressure melting, the temperature in the first zone is 190-200℃, the temperature in the second zone is 188-202℃, the temperature in the third zone is 190-205℃, and the temperature in the fourth zone is 185-199℃;

4) Cooling: After spinning, a side blowing device is installed in the cooling tunnel for cooling. The side blowing speed is 0.5 meters per second, the side blowing temperature is 19-27°C, and the humidity of the wind is 62-75%;

5) Oiling, spinning cluster oiling, the concentration of the oiling agent is 12.8-14.4%, the oiling rate of the oiling agent: 0.75-0.95%, and the pressure regulating range is 0.32-2.1 kg;

6) Winding forming, upper godet frequency: 61-76HZ, winding speed: 979-995 m/min, lower godet frequency: 61-77HZ, friction roller frequency: 68-74HZ, traverse frequency: 57-66HZ.
The multi-kilogram knotless wire preparation process according to claim 1, wherein the screw extruder includes a frame, an extrusion device is arranged on the frame, and a cooling device is arranged outside the extrusion device, and the extruder The device includes a barrel, a screw and an extrusion die. The barrel is provided with a feed port, the screw is set inside the barrel, and the cooling device is set on the outside of the barrel. The cooling device is multi-section spiral cooling water wound on the outside of the barrel. The two ends of the channel and the cooling water channel are the water inlet and the water outlet respectively.